Just start the game with -console added to the shortcut command line. Press tilde (~) to open the console in game, and use these cheats to do various things. Note that the console is very friendly, and if you're looking for a particular code just press a key like 'g', and all the commands that start with g will display. Press up and down on your arrows to scroll through those commands, and enter to activate the selected one.

Code	Effect
vstats get automatic_soak_successes < 1-10 >	Add indicated value to all soak rolls
vstats get automatic_str_successes < 1-10)	Add indicated value to unarmed and melee combat feat rolls
vchar_edit_histories 1	Can give character a history during creation
vclan player_chocula	Clan Chocula
quit	Exit to the desktop
giftxp < number >	Get experience points
god	God mode
money < number >	Increase some female breast size by indicated amount
notarget	Invisible to everyone
vhelp	List all console commands
cmdlist	List console commands
vitems	List items that can be spawned
impulse 101	Most items and weapons
noclip	No clipping mode
vstats sell	Sell off dots in any attribute for experience points
vstats get < stat > < 0-5 >	Set indicated attribute to indicated value
blood	Set player character's blood pool to approximately 75% full
blood < number >	Set player character's blood pool to indicated amount
vskip_intro	Skip sequence when sire is executed
give item_a_	Spawn clothing; cursor up or down to scroll console list
give item_g_	Spawn item; cursor up or down to scroll console list
give item_m_	Spawn money item; cursor up or down to scroll console list
give item_p_	Spawn vampire artifact or book; cursor up or down to scroll console list
give item_w_	Spawn weapon; cursor up or down to scroll console list
debug_infinite_ammo 2	Unlimited ammo for all weapons except flamethrower
vstats buy	Use up any xp pooled from the vstats sell code